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Worldwide Electronic Navigational Chart Data Base An IHO concept, based on the set of WEND Principles, designed specifically to ensure a world-wide consistent level of high-quality, updated official ENCs through integrated services that support chart carriage requirements of SOLAS and the requiremen [..]

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A database in the manufacturer’s internal ECDIS format produced as a result of transforming the ENC. The conversion from ENC contained in the ASCII form to SENC in a binary form may be carried outside the ECDIS in a lab. This is a preferable way to provide efficient and error-free electronic chart [..]

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Vessel Traffic Services A marine traffic monitoring system established by harbour or port authorities, similar to air traffic control for aircraft. These use radar, CCTV, VHF radiotelephony and AIS to track vessels.

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Voyage Data Recorder A data recording system designed for all ships, and required to comply with the IMO’s SOLAS Convention, in order to collect data from various sensors on board the vessel. The information is stored in an externally mounted protective storage unit.